;The major metal minerals recycled include tantalum niobite, fine spar, tantalum aeschynite, wolframite and scheelite, which have large density of generally 5 to 7.
要回收的金属
钽铌铁、细晶石、钽易解石、黑
、白，密度比较
，
为5~7。
The major metal minerals recycled include tantalum niobite, fine spar, tantalum aeschynite, wolframite and scheelite, which have large density of generally 5 to 7.
要回收的金属钽铌铁、细晶石、钽易解石、黑、白，密度比较，为5~7。
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